Portable trouble lamp



FIG. 1 is a front perspective view of a portable trouble lamp showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a left side elevational view thereof;

FIG. 8 is a cross-sectional view thereof as taken along line 8--8 of FIG. 2; and,

FIG. 9 is a cross-sectional view thereof as taken along line 9--9 of FIG. 2. 

The ornamental design for a portable trouble lamp, as shown and described. 